Ordinal Numbers

Ordinal numbers



What are ordinal numbers? 
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Ordinal numbers



What are ordinal numbers? 

Slide 1 - Diapositive

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Slide 2 - Vidéo

3.35
Ordinal numbers
Ordinal numbers are: 
A thing's position or order in a series. 

When to use ordinal numbers? 
  • position
  • floor
  • school grade
  • date and so on. 

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Examples

Slide 4 - Diapositive

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How do you write ordinal numbers?
Most ordinal numbers are created by adding a 'th' to the end of the number. 
Example : Four -> Fourth
Seven -> Seventh
Ten -> Tenth
For the words that 'th' does not fit, we use either 'st' or 'nd'
This may sometimes change the start of the word too. 

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Here are some examples:
'st' is for the first position, but we don't say onest as it is an exception to the rule. 

  • One-first
  • Two-second
  • Three-third
  • Five-fifth
  • Eight-eighth
  • Nine-ninth
  • Twelve-twelfth

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Example phrases
My birthday is February 15th.
The library is on the third floor.
He’s in the sixth grade.
I came second in the race.
January is the first month of the year.
My brother was first in line to buy the new iphone.
First, fold the piece of paper in half. Second, fold the piece of paper again.

Slide 8 - Diapositive

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Big numbers
The 'ten's after tenth (20,30,40,50) are written as their cardinal number (normal counting number) replacing the 'y' with an 'ieth' at the end of the word.

Twenty - Twentieth
Thirty - Thirtieth
Forty - Fortieth
Fifty - Fiftieth

Slide 9 - Diapositive

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Lets get to work
You have 10mins to write the missing letters, in silence and individually! 

Finished? 
Discuss your answers with the classmate next to you with a low voice. 
timer
10:00

Slide 10 - Diapositive

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Write the number five (5) in ordinal numbers with number.

Slide 11 - Question ouverte

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Write number twenty (20) in ordinal numbers with number.

Slide 12 - Question ouverte

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Choose the correct ordinal number

A
7nd, sevend
B
7th, seventh

Slide 13 - Quiz

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Choose the correct ordinal number

A
14nd, fourteend
B
14th, fourteenth

Slide 14 - Quiz

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Choose the correct ordinal number (rangtelwoord)

A
2th, seconth
B
2nd, second

Slide 15 - Quiz

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What is the ordinal number for 22?
A
Twenty-second
B
Twenty-twoth
C
Twenty-two
D
Twenty-twice

Slide 16 - Quiz

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What is the ordinal number for 12?
A
Twelve
B
Twelveth
C
Twelvth
D
Twelfth

Slide 17 - Quiz

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What is the ordinal number of 4?

A
Forth
B
Fourth
C
Fors
D
fortieth

Slide 18 - Quiz

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Choose the correct ordinal number

A
3th, thirth
B
3rd, third

Slide 19 - Quiz

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Which ordinal number is spelled incorrectly?
A
thirtieth
B
second
C
twenty-first
D
nineth

Slide 20 - Quiz

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What is the ordinal number of 1?
A
Fist
B
Oneth
C
First
D
One

Slide 21 - Quiz

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What is the ordinal number of 15?
A
Fiftieth
B
Five
C
Fifteenth
D
Fifth

Slide 22 - Quiz

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